1Department of Thoracic Medicine, St. Olavs University Hospital, Postboks 3250 Sluppen, 7006 Trondheim, Norway2Department of Immunology and Transfusion Medicine, St. Olavs University Hospital, 7006 Trondheim, Norway3Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, 7489 Trondheim, Norway4Department of Laboratory Medicine, Children’s and Women’s Health, Norwegian University of Science and Technology, 7489 Trondheim, Norway5Department of Circulation and Imaging, Norwegian University of Science and Technology, 7489 Trondheim, Norway